AS59121 Asahi Kasei Networks Corporation

AKNWS-NET - Asahi Kasei Networks Corporation · registered in Japan

IPv4 addresses33,0249 prefixes · 0.001% of announced IPv4

Rank in Japan#203largest network in JP by IPv4 space, of 724 · 0.02% of JP

Rank worldwide#4,763of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryJapan745 ASNs registered there

Open AS59121 in ASN lookup Look up an IP in this network (138.212.0.1) All networks in Japan

IPv4 prefixes

All 9 prefixes, in address order.

138.212.0.0/18
138.212.64.0/19
138.212.96.0/21
138.212.104.0/22
138.212.108.0/23
138.212.110.0/24
138.212.111.0/24
138.212.112.0/20
202.11.64.0/24

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources